It was referring to the remote git cache as 'remote artifact cache'.
These are usually the same server (a Trove, defaulting to
git.baserock.org) but can be configured independently, so they should
not be considered the same.
Indentally, the configuration / commandline options in question are
'git-resolve-cache-server' and 'artifact-cache-server'. Both default
to 'cache-server' if not set, which in turn defaults to
http://<trove-host>:8080/.